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<title>Berkeley DB Reference Guide: Release 4.5: Memory Pool API</title>
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<td><b><dl><dt>Berkeley DB Reference Guide:<dd>Upgrading Berkeley DB Applications</dl></b></td>
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<p align=center><b>Release 4.5: Memory Pool API</b></p>
<p>As part of implementing support for multi-version concurrency control,
the <a href="../../api_c/memp_fget.html#DB_MPOOL_DIRTY">DB_MPOOL_DIRTY</a> flag is now specified to the
<a href="../../api_c/memp_fget.html">DB_MPOOLFILE-&gt;get</a> method instead of <a href="../../api_c/memp_fput.html">DB_MPOOLFILE-&gt;put</a>, and the
DB_MPOOLFILE-&gt;set method has been removed.  In addition, a new
transaction handle parameter has been added to the <a href="../../api_c/memp_fget.html">DB_MPOOLFILE-&gt;get</a> method.</p>
<p>The DB_MPOOL_CLEAN flag is no longer supported.</p>
<p>Applications which use the memory pool API directly should update to
the new API in order to use 4.5.</p>
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